Wiring How does the blower motor get ground on a cj7. 1980. I have 12 volt on the wires. Switch works, no blower
When I reinstalled mine, I put a self-tapping screw into the blower motor mounting flange and ran a wire from that over to one of the heater mounting studs at the firewall.How does the blower motor get ground on a cj7. 1980. I have 12 volt on the wires. Switch works, no blower. Tried a by pas from battery. No Lucky so far.
When I reinstalled mine, I put a self-tapping screw into the blower motor mounting flange and ran a wire from that over to one of the heater mounting studs at the firewall.How does the blower motor get ground on a CJ7 . 1980. I have 12 volt on the wires. Switch works, no blower. Tried a by pas from battery. No Lucky so far.
Thank you. Problem solved.When I reinstalled mine, I put a self-tapping screw into the blower motor mounting flange and ran a wire from that over to one of the heater mounting studs at the firewall.
To securely ground the firewall I used two of the heater mounting studs that ran through firewall, cleaned the firewall down to metal on the engine side of the firewall, installed a stainless star washer, a stainless coupling nut, then a lock washer and bolt on the other end of the coupling nut. Ran a heavy gauge wire from the bolt on the end of the coupling nut to the negative terminal on the battery.
This gives an excellent ground to the firewall directly from the battery for everything using the firewall as a ground, but also gives a good ground connection for anything else in the engine bay.
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If you are into the heater, you might think about upgrading the motor to a Chevy blazer motor for a very good increase in air flow.
I did a write up on the process here.
Lower Heater Restoration Link
Fresh Air Box Restoration Link
Hope this helps,
Mike
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